Update charted to 0.4.8 and roll

packages/source_maps/.status

Index: packages/source_maps/.status
diff --git a/packages/source_maps/.status b/packages/source_maps/.status
deleted file mode 100644
index befa7ddc73550cf262bf400ca8be354780f34661..0000000000000000000000000000000000000000
--- a/packages/source_maps/.status
+++ /dev/null
@@ -1,20 +0,0 @@
-# Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-# for details. All rights reserved. Use of this source code is governed by a
-# BSD-style license that can be found in the LICENSE file.
-
-# Skip non-test files ending with "_test".
-packages/*: Skip
-*/packages/*: Skip
-*/*/packages/*: Skip
-*/*/*/packages/*: Skip
-*/*/*/*packages/*: Skip
-*/*/*/*/*packages/*: Skip
-
-# Only run tests from the build directory, since we don't care about the
-# difference between transformed an untransformed code.
-test/*: Skip
-
-[ $compiler == dart2js || $compiler == dart2dart ]
-build/test/vlq_test: RuntimeError # A VLQ test checks for large numbers that
-                                  # overflow in JS (numbers slightly larger than
-                                  # 32 bits where we do bitwise operations).